Compilare: main.cpp: In function 'int main()': main.cpp:143:12: warning: this 'while' clause does not guard... [-Wmisleading-indentation] while( (!q.empty()) && i > q.front()) ^~~~~ main.cpp:147:16: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while' int f = q.size(); ^~~